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Pamelina

Reptilia - Kuehneosauridae

Taxonomy
Pamelina was named by Evans (2009). Its type is Pamelina polonica. It was considered monophyletic by Evans (2009).

It was assigned to Kuehneosauridae by Evans (2009).

Species
P. polonica (type species)

Synonymy list
YearName and author
2009Pamelina Evans

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
RankNameAuthor
Cotylosauria()
Amniota
Sauropsida
classReptilia
subclassEureptilia()
Romeriida
Diapsida()
Eosuchia()
Neodiapsida
SauriaGauthier 1984
Lepidosauromorpha(Benton 1983)
LepidosauriformesGauthier et al. 1988
familyKuehneosauridae
genusPamelina

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Pamelina Evans 2009
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Pamelina polonica Evans 2009
Diagnosis
ReferenceDiagnosis
S. E. Evans 2009Small diapsid reptile resembling Late Triassic kuehneosaurids in having confluent nares framed by specialised premaxillae with posterolateral but not dorsomedial processes; maxilla almost excluded from the narial margin by the posterolateral process of the premaxilla; prefrontal with only a narrow contribution to the preorbital skull wall; loss of the parietal foramen; anterolateral flange on the parietal meeting postorbital to exclude the postfrontal from the margins of the upper temporal fenestra; specialised slender squamosal with a strong posterodorsal process but no anteroventral ramus; no supratemporal bone; mediolaterally compressed amphiplatyan vertebral centra with short slender transverse processes throughout the column; dichocephalous ribs on cervical vertebrae, slender holocephalous ribs on dorsal vertebrae; very lightly built skeleton, bones with internal cavities. Pamelina differs from Kuehneosaurus, Kuehneosuchus, and Icarosaurus in lacking teeth on the parasphenoid, and in having more gracile ribs and vertebrae, with short narrow circular transverse processes (unlike the extended processes of Late Triassic taxa) and only limited buttressing on the vertebral body (as against strong buttressing, especially in Kuehneosaurus). Pamelina also differs from the British kuehneosaurs in lacking three−headed ribs on anterior vertebrae (the condition in Icarosaurus is less certain, Colbert 1970, p. 107). Pamelina differs from all other known Permian andMesozoic diapsids in the combination of confluent nares with a reduced squamosal, an incomplete lower temporal arcade, an expanded quadrate, and laterally compressed amphiplatyan vertebrae with long slender transverse processes and extended ribs. The skull of the Triassic Mecistotrachelos (Fraser 2007) is poorly known, but the postcranial skeleton of Pamelina differs in having relatively short cervical vertebrae.
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: terrestrialsubc
Locomotion: actively mobilec
Created: 2017-04-17 15:16:03
Modified: 2017-04-17 15:16:03
Source: subc = subclass, c = class, subp = subphylum
References: Carroll 1988, Hendy et al. 2009

Age range: Olenekian or 251.20000 to 247.20000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Olenekian251.2 - 247.2Poland (Malopolskie) Diapsida indet. (38528)